This completely depends on what you believe is inaccurate.
Do you believe something is inaccurate because it doesn't align with the tiering system we have in place? If so, mathematical/dimensional systems are better with having more consistent ratings across the board on the site, due to its less flexible nature. I do agree there.
Do you believe something is inaccurate because it doesn't align with how a verse should realistically be scaled? If so, the Ultima suggested system is the best for attempting to accurately quantify most verses in a way that's more fair to the content contained within them. Space, dimensionality, and such are things that become quickly irrelevant to verses with metaphysical concepts and ideas.
But, a concept, a structure of thought or any metaphysical element is still limited only to the dimension shown in the verse.
For example, imagine a verse and a cosmology where only the 5th dimension exists, in this cosmology you can imagine, visualize and model any concept, any theoretical dimension (i.e. higher dimensions) in your collective consciousness. You can think of 1000D in this verse, but you can only think and interpret the 1000D you think of by modeling it within the boundaries of the 5th dimension, in the 5th dimension. This is true for any higher dimension (theoretical dimensions).
Even if you consider and model 180017016D, the concept you are considering is actually still 5 dimensional, you will be modeling 180017016D only in the 5th dimension and it will still be 5 dimensional.
The best example of this is that although we humans cannot physically perceive the 4-dimensional cube in any way, when we imagine it in our minds and think philosophically, we still model the 4-dimensional cube in the 3rd dimension. (in borders of the 3rd dimension)
Therefore, even such metaphysical and philosophical terms are limited only to the dimensionality shown in the verse.
It basically comes down to what you personally think is more important. A more consistent tiering system, or a more encompassing tiering system.
I thought I explained it pretty simply there. I think it's pretty reasonable for me to look at verses that literally spell out "I'm beyond math, dimensional hierarchies, logic, etc" and then say that us trying to quantify them within dimensionality is a pretty dumb thing to do if you're trying to be a reasonable power scaler, and not just trying to maintain consistency within a given tiering system.
Even when you say "beyond mathematics", you are actually still including mathematics. But, you only cover the mathematics shown in the verse, when you say "I am beyond all concepts of dimensions", you also include all theoretical dimensions, but even so, even the thought structure of these theoretical dimensions is limited only to the dimensionality shown in the verse (I have already mentioned it more or less above)
So these give +1 on current standards and minimize NLF.
"Everything is taken within the scope of what the verse shows and doesn't go beyond the verse."